This is easier said then done but relax and think of other things when not shooting.
Train to think positive thoughts on the line. Instead of thinking "I won't miss this one" try "I will crush this target just like the last". Have your favorite song playing in your mind. Sing it to yourself as you shoot. It helps me clear my mind of the "clutter".
One other idea is to shoot for fun. Shoot chinese or protection or another trap "game" to relax.
Ever had formal training (shooting clinic)?
Ever had your gun professionally fitted?
Do have an established practice routine that involves more than just shooting practice rounds?
Ever pattern tested your gun on paper?
If you answered no to any of these questions, that would be a good place to start. Questions for me, feel free. Todd
Sometimes things change when you shoot at big event. My first state shoot I ran 75 straight and the last 24. Went home and next Sunday shot 22-23-19-and 23. You tell me?
At the state shoot the targets were in slow motion, were as big as dinner plates, and would stop just for me to shoot them.
After 75 we changed to the last bank and waiting for the squad to finish the shooter on #3 asked to see my antique I said sure. When he put it back in the rack he slid the rib on the back of the rack and took off the center bead. This was enough to quit thinking about targets and being pissed I missed.